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Message-Id: <20190627150133.58746-4-jwi@linux.ibm.com>
Date: Thu, 27 Jun 2019 17:01:24 +0200
From: Julian Wiedmann <jwi@...ux.ibm.com>
To: David Miller <davem@...emloft.net>
Cc: <netdev@...r.kernel.org>, <linux-s390@...r.kernel.org>,
Heiko Carstens <heiko.carstens@...ibm.com>,
Stefan Raspl <raspl@...ux.ibm.com>,
Ursula Braun <ubraun@...ux.ibm.com>,
Julian Wiedmann <jwi@...ux.ibm.com>
Subject: [PATCH net-next 03/12] s390/qeth: dynamically allocate various cmds with sub-types
This patch converts the adapter, assist and bridgeport cmd paths to
dynamic allocation. Most of the work is about re-organizing the cmd
headers, calculating the correct cmd length, and filling in the right
value in the sub-cmd's length field.
Since we now also set the correct length for cmds that are not reflected
by a fixed struct (ie SNMP), we can remove the work-around from
qeth_snmp_command().
Signed-off-by: Julian Wiedmann <jwi@...ux.ibm.com>
---
drivers/s390/net/qeth_core.h | 9 ++--
drivers/s390/net/qeth_core_main.c | 86 ++++++++++++++++---------------
drivers/s390/net/qeth_core_mpc.h | 27 ++++------
drivers/s390/net/qeth_l2_main.c | 29 ++++++-----
drivers/s390/net/qeth_l3_main.c | 10 ++--
5 files changed, 78 insertions(+), 83 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 35d7b43f6580..258756dc06c3 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -1003,6 +1003,11 @@ struct qeth_cmd_buffer *qeth_ipa_alloc_cmd(struct qeth_card *card,
struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
unsigned int length, unsigned int ccws,
long timeout);
+struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
+ enum qeth_ipa_funcs ipa_func,
+ u16 cmd_code,
+ unsigned int data_length,
+ enum qeth_prot_versions prot);
struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
@@ -1037,10 +1042,6 @@ int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
void qeth_trace_features(struct qeth_card *);
int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
-struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
- enum qeth_ipa_funcs,
- __u16, __u16,
- enum qeth_prot_versions);
int qeth_set_features(struct net_device *, netdev_features_t);
void qeth_enable_hw_features(struct net_device *dev);
netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 3ba91b1c1315..696aba566d0b 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -2915,21 +2915,24 @@ static int qeth_query_setadapterparms_cb(struct qeth_card *card,
}
static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
- __u32 command, __u32 cmdlen)
+ enum qeth_ipa_setadp_cmd adp_cmd,
+ unsigned int data_length)
{
+ struct qeth_ipacmd_setadpparms_hdr *hdr;
struct qeth_cmd_buffer *iob;
- struct qeth_ipa_cmd *cmd;
- iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
- QETH_PROT_IPV4);
- if (iob) {
- cmd = __ipa_cmd(iob);
- cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
- cmd->data.setadapterparms.hdr.command_code = command;
- cmd->data.setadapterparms.hdr.used_total = 1;
- cmd->data.setadapterparms.hdr.seq_no = 1;
- }
+ iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETADAPTERPARMS, QETH_PROT_IPV4,
+ data_length +
+ offsetof(struct qeth_ipacmd_setadpparms,
+ data));
+ if (!iob)
+ return NULL;
+ hdr = &__ipa_cmd(iob)->data.setadapterparms.hdr;
+ hdr->cmdlength = sizeof(*hdr) + data_length;
+ hdr->command_code = adp_cmd;
+ hdr->used_total = 1;
+ hdr->seq_no = 1;
return iob;
}
@@ -2940,7 +2943,7 @@ static int qeth_query_setadapterparms(struct qeth_card *card)
QETH_CARD_TEXT(card, 3, "queryadp");
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
- sizeof(struct qeth_ipacmd_setadpparms));
+ SETADP_DATA_SIZEOF(query_cmds_supp));
if (!iob)
return -ENOMEM;
rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
@@ -3027,8 +3030,7 @@ int qeth_query_switch_attributes(struct qeth_card *card,
return -EOPNOTSUPP;
if (!netif_carrier_ok(card->dev))
return -ENOMEDIUM;
- iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
- sizeof(struct qeth_ipacmd_setadpparms_hdr));
+ iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES, 0);
if (!iob)
return -ENOMEM;
return qeth_send_ipa_cmd(card, iob,
@@ -4152,7 +4154,7 @@ void qeth_setadp_promisc_mode(struct qeth_card *card)
QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
- sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
+ SETADP_DATA_SIZEOF(mode));
if (!iob)
return;
cmd = __ipa_cmd(iob);
@@ -4192,8 +4194,7 @@ int qeth_setadpparms_change_macaddr(struct qeth_card *card)
QETH_CARD_TEXT(card, 4, "chgmac");
iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
- sizeof(struct qeth_ipacmd_setadpparms_hdr) +
- sizeof(struct qeth_change_addr));
+ SETADP_DATA_SIZEOF(change_addr));
if (!iob)
return -ENOMEM;
cmd = __ipa_cmd(iob);
@@ -4302,8 +4303,7 @@ static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
QETH_CARD_TEXT(card, 4, "setacctl");
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
- sizeof(struct qeth_ipacmd_setadpparms_hdr) +
- sizeof(struct qeth_set_access_ctrl));
+ SETADP_DATA_SIZEOF(set_access_ctrl));
if (!iob)
return -ENOMEM;
cmd = __ipa_cmd(iob);
@@ -4498,9 +4498,9 @@ static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
/* skip 4 bytes (data_len struct member) to get req_len */
if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
return -EFAULT;
- if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
- sizeof(struct qeth_ipacmd_hdr) -
- sizeof(struct qeth_ipacmd_setadpparms_hdr)))
+ if (req_len + offsetof(struct qeth_ipacmd_setadpparms, data) +
+ offsetof(struct qeth_ipa_cmd, data) + IPA_PDU_HEADER_SIZE >
+ QETH_BUFSIZE)
return -EINVAL;
ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
if (IS_ERR(ureq)) {
@@ -4515,16 +4515,12 @@ static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
}
qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
- iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
- QETH_SNMP_SETADP_CMDLENGTH + req_len);
+ iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, req_len);
if (!iob) {
rc = -ENOMEM;
goto out;
}
- /* for large requests, fix-up the length fields: */
- qeth_prepare_ipa_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len);
-
cmd = __ipa_cmd(iob);
memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
rc = qeth_send_ipa_cmd(card, iob, qeth_snmp_command_cb, &qinfo);
@@ -4602,8 +4598,7 @@ static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
}
iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
- sizeof(struct qeth_ipacmd_setadpparms_hdr) +
- sizeof(struct qeth_query_oat));
+ SETADP_DATA_SIZEOF(query_oat));
if (!iob) {
rc = -ENOMEM;
goto out_free;
@@ -4665,8 +4660,7 @@ int qeth_query_card_info(struct qeth_card *card,
QETH_CARD_TEXT(card, 2, "qcrdinfo");
if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
return -EOPNOTSUPP;
- iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
- sizeof(struct qeth_ipacmd_setadpparms_hdr));
+ iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO, 0);
if (!iob)
return -ENOMEM;
return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
@@ -5333,22 +5327,28 @@ EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
enum qeth_ipa_funcs ipa_func,
- __u16 cmd_code, __u16 len,
+ u16 cmd_code,
+ unsigned int data_length,
enum qeth_prot_versions prot)
{
+ struct qeth_ipacmd_setassparms *setassparms;
+ struct qeth_ipacmd_setassparms_hdr *hdr;
struct qeth_cmd_buffer *iob;
- struct qeth_ipa_cmd *cmd;
QETH_CARD_TEXT(card, 4, "getasscm");
- iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
+ iob = qeth_ipa_alloc_cmd(card, IPA_CMD_SETASSPARMS, prot,
+ data_length +
+ offsetof(struct qeth_ipacmd_setassparms,
+ data));
+ if (!iob)
+ return NULL;
- if (iob) {
- cmd = __ipa_cmd(iob);
- cmd->data.setassparms.hdr.assist_no = ipa_func;
- cmd->data.setassparms.hdr.length = 8 + len;
- cmd->data.setassparms.hdr.command_code = cmd_code;
- }
+ setassparms = &__ipa_cmd(iob)->data.setassparms;
+ setassparms->assist_no = ipa_func;
+ hdr = &setassparms->hdr;
+ hdr->length = sizeof(*hdr) + data_length;
+ hdr->command_code = cmd_code;
return iob;
}
EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
@@ -5916,7 +5916,8 @@ static int qeth_set_csum_on(struct qeth_card *card, enum qeth_ipa_funcs cstype,
return -EOPNOTSUPP;
}
- iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE, 4,
+ iob = qeth_get_setassparms_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
+ SETASS_DATA_SIZEOF(flags_32bit),
prot);
if (!iob) {
qeth_set_csum_off(card, cstype, prot);
@@ -5999,7 +6000,8 @@ static int qeth_set_tso_on(struct qeth_card *card,
}
iob = qeth_get_setassparms_cmd(card, IPA_OUTBOUND_TSO,
- IPA_CMD_ASS_ENABLE, sizeof(caps), prot);
+ IPA_CMD_ASS_ENABLE,
+ SETASS_DATA_SIZEOF(caps), prot);
if (!iob) {
qeth_set_tso_off(card, prot);
return -ENOMEM;
diff --git a/drivers/s390/net/qeth_core_mpc.h b/drivers/s390/net/qeth_core_mpc.h
index 61fc4005dd53..46f038580a72 100644
--- a/drivers/s390/net/qeth_core_mpc.h
+++ b/drivers/s390/net/qeth_core_mpc.h
@@ -379,9 +379,7 @@ struct qeth_ipacmd_layer2setdelvlan {
__u16 vlan_id;
} __attribute__ ((packed));
-
struct qeth_ipacmd_setassparms_hdr {
- __u32 assist_no;
__u16 length;
__u16 command_code;
__u16 return_code;
@@ -426,6 +424,7 @@ struct qeth_tso_start_data {
/* SETASSPARMS IPA Command: */
struct qeth_ipacmd_setassparms {
+ u32 assist_no;
struct qeth_ipacmd_setassparms_hdr hdr;
union {
__u32 flags_32bit;
@@ -526,8 +525,6 @@ struct qeth_query_switch_attributes {
#define QETH_SETADP_FLAGS_VIRTUAL_MAC 0x80 /* for CHANGE_ADDR_READ_MAC */
struct qeth_ipacmd_setadpparms_hdr {
- u32 supp_hw_cmds;
- u32 reserved1;
u16 cmdlength;
u16 reserved2;
u32 command_code;
@@ -539,6 +536,7 @@ struct qeth_ipacmd_setadpparms_hdr {
};
struct qeth_ipacmd_setadpparms {
+ struct qeth_ipa_caps hw_cmds;
struct qeth_ipacmd_setadpparms_hdr hdr;
union {
struct qeth_query_cmds_supp query_cmds_supp;
@@ -552,6 +550,9 @@ struct qeth_ipacmd_setadpparms {
} data;
} __attribute__ ((packed));
+#define SETADP_DATA_SIZEOF(field) FIELD_SIZEOF(struct qeth_ipacmd_setadpparms,\
+ data.field)
+
/* CREATE_ADDR IPA Command: ***********************************************/
struct qeth_create_destroy_address {
__u8 unique_id[8];
@@ -688,8 +689,6 @@ struct mac_addr_lnid {
} __packed;
struct qeth_ipacmd_sbp_hdr {
- __u32 supported_sbp_cmds;
- __u32 enabled_sbp_cmds;
__u16 cmdlength;
__u16 reserved1;
__u32 command_code;
@@ -704,16 +703,10 @@ struct qeth_sbp_query_cmds_supp {
__u32 reserved;
} __packed;
-struct qeth_sbp_reset_role {
-} __packed;
-
struct qeth_sbp_set_primary {
struct net_if_token token;
} __packed;
-struct qeth_sbp_set_secondary {
-} __packed;
-
struct qeth_sbp_port_entry {
__u8 role;
__u8 state;
@@ -739,17 +732,19 @@ struct qeth_sbp_state_change {
} __packed;
struct qeth_ipacmd_setbridgeport {
+ struct qeth_ipa_caps sbp_cmds;
struct qeth_ipacmd_sbp_hdr hdr;
union {
struct qeth_sbp_query_cmds_supp query_cmds_supp;
- struct qeth_sbp_reset_role reset_role;
struct qeth_sbp_set_primary set_primary;
- struct qeth_sbp_set_secondary set_secondary;
struct qeth_sbp_query_ports query_ports;
struct qeth_sbp_state_change state_change;
} data;
} __packed;
+#define SBP_DATA_SIZEOF(field) FIELD_SIZEOF(struct qeth_ipacmd_setbridgeport,\
+ data.field)
+
/* ADDRESS_CHANGE_NOTIFICATION adapter-initiated "command" *******************/
/* Bitmask for entry->change_code. Both bits may be raised. */
enum qeth_ipa_addr_change_code {
@@ -827,10 +822,6 @@ enum qeth_ipa_arp_return_codes {
extern const char *qeth_get_ipa_msg(enum qeth_ipa_return_codes rc);
extern const char *qeth_get_ipa_cmd_name(enum qeth_ipa_cmds cmd);
-#define QETH_SETADP_BASE_LEN (sizeof(struct qeth_ipacmd_hdr) + \
- sizeof(struct qeth_ipacmd_setadpparms_hdr))
-#define QETH_SNMP_SETADP_CMDLENGTH 16
-
/* Helper functions */
#define IS_IPA_REPLY(cmd) ((cmd->hdr.initiator == IPA_CMD_INITIATOR_HOST) || \
(cmd->hdr.initiator == IPA_CMD_INITIATOR_OSA_REPLY))
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 1dd8d22299c2..f762d22a3272 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1427,22 +1427,25 @@ static int qeth_bridgeport_makerc(struct qeth_card *card,
static struct qeth_cmd_buffer *qeth_sbp_build_cmd(struct qeth_card *card,
enum qeth_ipa_sbp_cmd sbp_cmd,
- unsigned int cmd_length)
+ unsigned int data_length)
{
enum qeth_ipa_cmds ipa_cmd = IS_IQD(card) ? IPA_CMD_SETBRIDGEPORT_IQD :
IPA_CMD_SETBRIDGEPORT_OSA;
+ struct qeth_ipacmd_sbp_hdr *hdr;
struct qeth_cmd_buffer *iob;
- struct qeth_ipa_cmd *cmd;
- iob = qeth_get_ipacmd_buffer(card, ipa_cmd, 0);
+ iob = qeth_ipa_alloc_cmd(card, ipa_cmd, QETH_PROT_NONE,
+ data_length +
+ offsetof(struct qeth_ipacmd_setbridgeport,
+ data));
if (!iob)
return iob;
- cmd = __ipa_cmd(iob);
- cmd->data.sbp.hdr.cmdlength = sizeof(struct qeth_ipacmd_sbp_hdr) +
- cmd_length;
- cmd->data.sbp.hdr.command_code = sbp_cmd;
- cmd->data.sbp.hdr.used_total = 1;
- cmd->data.sbp.hdr.seq_no = 1;
+
+ hdr = &__ipa_cmd(iob)->data.sbp.hdr;
+ hdr->cmdlength = sizeof(*hdr) + data_length;
+ hdr->command_code = sbp_cmd;
+ hdr->used_total = 1;
+ hdr->seq_no = 1;
return iob;
}
@@ -1477,7 +1480,7 @@ static void qeth_bridgeport_query_support(struct qeth_card *card)
QETH_CARD_TEXT(card, 2, "brqsuppo");
iob = qeth_sbp_build_cmd(card, IPA_SBP_QUERY_COMMANDS_SUPPORTED,
- sizeof(struct qeth_sbp_query_cmds_supp));
+ SBP_DATA_SIZEOF(query_cmds_supp));
if (!iob)
return;
@@ -1569,23 +1572,21 @@ static int qeth_bridgeport_set_cb(struct qeth_card *card,
*/
int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role)
{
- int cmdlength;
struct qeth_cmd_buffer *iob;
enum qeth_ipa_sbp_cmd setcmd;
+ unsigned int cmdlength = 0;
QETH_CARD_TEXT(card, 2, "brsetrol");
switch (role) {
case QETH_SBP_ROLE_NONE:
setcmd = IPA_SBP_RESET_BRIDGE_PORT_ROLE;
- cmdlength = sizeof(struct qeth_sbp_reset_role);
break;
case QETH_SBP_ROLE_PRIMARY:
setcmd = IPA_SBP_SET_PRIMARY_BRIDGE_PORT;
- cmdlength = sizeof(struct qeth_sbp_set_primary);
+ cmdlength = SBP_DATA_SIZEOF(set_primary);
break;
case QETH_SBP_ROLE_SECONDARY:
setcmd = IPA_SBP_SET_SECONDARY_BRIDGE_PORT;
- cmdlength = sizeof(struct qeth_sbp_set_secondary);
break;
default:
return -EINVAL;
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 3de71ed54e92..ff4d514656f2 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -1564,7 +1564,8 @@ static int qeth_l3_arp_set_no_entries(struct qeth_card *card, int no_entries)
}
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
- IPA_CMD_ASS_ARP_SET_NO_ENTRIES, 4,
+ IPA_CMD_ASS_ARP_SET_NO_ENTRIES,
+ SETASS_DATA_SIZEOF(flags_32bit),
QETH_PROT_IPV4);
if (!iob)
return -ENOMEM;
@@ -1710,9 +1711,7 @@ static int qeth_l3_query_arp_cache_info(struct qeth_card *card,
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING,
IPA_CMD_ASS_ARP_QUERY_INFO,
- sizeof(struct qeth_arp_query_data)
- - sizeof(char),
- prot);
+ SETASS_DATA_SIZEOF(query_arp), prot);
if (!iob)
return -ENOMEM;
cmd = __ipa_cmd(iob);
@@ -1796,7 +1795,8 @@ static int qeth_l3_arp_modify_entry(struct qeth_card *card,
}
iob = qeth_get_setassparms_cmd(card, IPA_ARP_PROCESSING, arp_cmd,
- sizeof(*cmd_entry), QETH_PROT_IPV4);
+ SETASS_DATA_SIZEOF(arp_entry),
+ QETH_PROT_IPV4);
if (!iob)
return -ENOMEM;
--
2.17.1
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